/* ==========================================================================
   Lockheed Martin Aircraft - Educational Project Stylesheet
   Subject: Full Stack Development - 1 (Semester 3)
   Tech Stack: Pure Semantic CSS3 (No Frameworks, No JavaScript)
   ========================================================================== */

/* ==========================================================================
   1. CSS Reset & Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    color: #334155;
    background-color: #ffffff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

img {
    max-width: 100%;
    height: auto;
}

/* Accessibility focus outline for keyboard navigation */
a:focus-visible {
    outline: 2px solid #38bdf8;
    outline-offset: 2px;
}

/* Common container utility for standard width sections */
.section-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================================================
   2. Header Section
   ========================================================================== */
.site-header {
    background-color: #0a192f;
    color: #ffffff;
    text-align: center;
    padding: 30px 20px 22px 20px;
    border-bottom: 2px solid #1e293b;
}

.header-container {
    max-width: 1240px;
    margin: 0 auto;
}

.site-header h1 {
    font-size: 28px;
    letter-spacing: 2px;
    color: #ffffff;
    margin-bottom: 6px;
    text-transform: uppercase;
}

.header-subtitle {
    font-size: 15px;
    color: #94a3b8;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   3. Navigation Bar
   ========================================================================== */
.navbar {
    background-color: #030712;
    border-bottom: 1px solid #1f2937;
    padding: 0 20px;
}

.navbar-container {
    max-width: 1240px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.site-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.site-logo img {
    width: 200px;
    height: auto;
    display: block;
}

.nav-links {
    list-style: none;
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 4px;
    padding: 0;
    margin: 0;
}

.nav-links li a {
    display: block;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
    padding: 14px 20px;
    border-bottom: 3px solid transparent;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.nav-links li a:hover {
    background-color: #1e293b;
    color: #ffffff;
    border-bottom: 3px solid #dc2626;
}

.nav-links li a.active {
    color: #ffffff;
    background-color: #0f172a;
    border-bottom: 3px solid #dc2626;
}

/* ==========================================================================
   4. Hero Section
   ========================================================================== */
.hero-section {
    background-color: #0a192f;
    background-image: linear-gradient(rgba(10, 25, 47, 0.75), rgba(2, 6, 23, 0.85)), url('../images/hero-banner.svg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: #ffffff;
    text-align: center;
    padding: 85px 20px;
    border-bottom: 1px solid #1e293b;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-content h2 {
    font-size: 36px;
    margin-bottom: 16px;
    color: #ffffff;
    letter-spacing: 1px;
}

.hero-content p {
    font-size: 17px;
    line-height: 1.7;
    color: #cbd5e1;
    margin-bottom: 28px;
}

.btn-hero {
    display: inline-block;
    background-color: #dc2626;
    color: #ffffff;
    text-decoration: none;
    font-size: 15px;
    font-weight: bold;
    padding: 12px 30px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.btn-hero:hover {
    background-color: #b91c1c;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    align-items: center;
}

.btn-hero-secondary {
    display: inline-block;
    background-color: transparent;
    color: #ffffff;
    border: 2px solid #38bdf8;
    font-size: 15px;
    font-weight: bold;
    padding: 10px 24px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.btn-hero-secondary:hover {
    background-color: #38bdf8;
    color: #0a192f;
}

.home-notice-text {
    margin-top: 18px;
    font-size: 16px;
    font-weight: bold;
    color: #38bdf8;
    min-height: 24px;
}

/* ==========================================================================
   5. About the Project Section
   ========================================================================== */
.about-section {
    background-color: #f8fafc;
    padding: 60px 20px;
    border-bottom: 1px solid #e2e8f0;
}

.about-section h2 {
    font-size: 26px;
    color: #0f172a;
    text-align: center;
    margin-bottom: 18px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-section p {
    font-size: 16px;
    line-height: 1.8;
    color: #334155;
    text-align: center;
    max-width: 980px;
    margin: 0 auto;
}

/* ==========================================================================
   6. Featured Aircraft Section & Cards
   ========================================================================== */
.featured-section,
.featured-aircraft {
    background-color: #ffffff;
    padding: 65px 20px;
    border-bottom: 1px solid #e2e8f0;
}

.featured-section h2,
.featured-aircraft h2 {
    font-size: 28px;
    color: #0f172a;
    text-align: center;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-subtitle {
    text-align: center;
    color: #64748b;
    font-size: 16px;
    max-width: 850px;
    margin: 0 auto 45px auto;
}

.aircraft-category-block {
    margin-bottom: 55px;
    padding-bottom: 40px;
    border-bottom: 1px solid #e2e8f0;
}

.aircraft-category-block:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.aircraft-category-block h3 {
    font-size: 22px;
    color: #0a192f;
    text-align: center;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-description {
    text-align: center;
    font-size: 15px;
    color: #475569;
    max-width: 850px;
    margin: 0 auto 30px auto;
    line-height: 1.6;
}

.aircraft-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.aircraft-card {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 22px;
    flex: 1 1 320px;
    max-width: 370px;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.aircraft-card:hover {
    border-color: #94a3b8;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
}

.aircraft-card figure {
    margin: 0 0 16px 0;
    background-color: #0b1728;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.aircraft-card figure img {
    display: block;
    width: 100%;
    height: 200px;
    object-fit: cover;
    object-position: center;
}

.aircraft-card figure figcaption {
    font-size: 12px;
    color: #64748b;
    text-align: center;
    padding: 6px 10px;
    background-color: #f1f5f9;
    border-top: 1px solid #e2e8f0;
}

.aircraft-card h3 {
    font-size: 20px;
    color: #0a192f;
    margin-bottom: 8px;
}

.aircraft-category {
    font-size: 14px;
    color: #475569;
    margin-bottom: 10px;
}

.aircraft-category strong {
    color: #0f172a;
}

.aircraft-status {
    font-size: 14px;
    color: #475569;
    margin-bottom: 10px;
}

.aircraft-status strong {
    color: #0f172a;
}

/* Special Labels for Highlighted Aircraft */
.special-label {
    display: inline-block;
    font-size: 12px;
    font-weight: bold;
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 12px;
    align-self: flex-start;
}

.label-historic {
    background-color: #e2e8f0;
    color: #1e293b;
    border: 1px solid #94a3b8;
}

.label-special-mission {
    background-color: #ede9fe;
    color: #5b21b6;
    border: 1px solid #c4b5fd;
}

.label-high-value {
    background-color: #fef08a;
    color: #854d0e;
    border: 2px solid #ca8a04;
    font-size: 13px;
    padding: 4px 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.label-fictional {
    background-color: #ecfeff;
    color: #0e7490;
    border: 1px solid #06b6d4;
}

.aircraft-desc {
    font-size: 14px;
    color: #475569;
    line-height: 1.6;
    margin-bottom: 22px;
    flex-grow: 1; /* Aligns all buttons at the bottom across cards of varying text length */
}

.btn-card {
    display: inline-block;
    background-color: #0a192f;
    color: #ffffff;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
    text-align: center;
    padding: 10px 18px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.btn-card:hover {
    background-color: #dc2626;
}

/* ==========================================================================
   7. Aircraft Categories Section
   ========================================================================== */
.categories-section {
    background-color: #f8fafc;
    padding: 65px 20px;
    border-bottom: 1px solid #e2e8f0;
}

.categories-section h2 {
    font-size: 26px;
    color: #0f172a;
    text-align: center;
    margin-bottom: 35px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.category-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    padding: 0;
    margin: 0;
}

.category-item {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 26px;
    flex: 1 1 300px;
    max-width: 370px;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.category-item:hover {
    border-color: #94a3b8;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.category-item h3 {
    font-size: 18px;
    color: #0a192f;
    margin-bottom: 10px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 6px;
}

.category-item p {
    font-size: 14px;
    color: #475569;
    line-height: 1.6;
}

/* ==========================================================================
   8. Call to Action (CTA) Section
   ========================================================================== */
.cta-section {
    background-color: #0a192f;
    color: #ffffff;
    text-align: center;
    padding: 65px 20px;
    border-bottom: 1px solid #1e293b;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 28px;
    margin-bottom: 14px;
    color: #ffffff;
}

.cta-content p {
    font-size: 16px;
    color: #cbd5e1;
    margin-bottom: 26px;
}

.btn-cta {
    display: inline-block;
    background-color: #dc2626;
    color: #ffffff;
    text-decoration: none;
    font-size: 15px;
    font-weight: bold;
    padding: 12px 30px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.btn-cta:hover {
    background-color: #b91c1c;
}

/* ==========================================================================
   9. Footer Section
   ========================================================================== */
.site-footer {
    background-color: #030712;
    color: #94a3b8;
    text-align: center;
    padding: 40px 20px;
    margin-top: auto;
}

.footer-container {
    max-width: 1240px;
    margin: 0 auto;
}

.footer-note {
    font-size: 14px;
    font-weight: bold;
    color: #cbd5e1;
    margin-bottom: 6px;
}

.footer-copy {
    font-size: 13px;
    color: #64748b;
    margin-bottom: 12px;
}

.footer-disclaimer {
    font-size: 12px;
    color: #64748b;
    max-width: 820px;
    margin: 0 auto 16px auto;
    line-height: 1.5;
}

.footer-social-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 22px;
}

.footer-social-links a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #38bdf8;
    background-color: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.25);
    padding: 6px 14px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

.footer-social-links a:hover {
    background-color: #38bdf8;
    color: #030712;
    border-color: #38bdf8;
    text-decoration: none;
}

.footer-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-nav a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 13px;
    transition: color 0.2s ease;
}

.footer-nav a:hover {
    color: #ffffff;
    text-decoration: underline;
}

/* Developer Credit Card (about.html) */
.developer-credit-card {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-left: 4px solid #38bdf8;
    border-radius: 8px;
    padding: 26px 28px;
    margin-top: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.developer-intro {
    font-size: 18px;
    color: #0a192f;
    margin-bottom: 8px;
}

.developer-desc {
    font-size: 14px;
    color: #475569;
    line-height: 1.6;
    margin-bottom: 18px;
}

.developer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.developer-links .btn-card,
.developer-links .btn-hero-secondary {
    display: inline-block;
    padding: 9px 18px;
    font-size: 13px;
    text-decoration: none;
    border-radius: 4px;
}

/* Contact Social Profiles List (contact.html) */
.contact-social-box {
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid #e2e8f0;
}

.contact-social-box h3 {
    font-size: 14px;
    color: #0a192f;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.contact-social-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.contact-social-list li a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #0284c7;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    word-break: break-all;
    transition: color 0.2s ease;
}

.contact-social-list li a:hover {
    color: #0369a1;
    text-decoration: underline;
}

/* ==========================================================================
   9A. Aircraft Search & Category Filter Controls (aircraft.html)
   ========================================================================== */
.search-filter-section {
    background-color: #f8fafc;
    padding: 35px 20px;
    border-bottom: 1px solid #e2e8f0;
}

.search-filter-card {
    max-width: 1240px;
    margin: 0 auto;
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 24px 28px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.search-filter-header {
    margin-bottom: 18px;
}

.search-filter-header h2 {
    font-size: 20px;
    color: #0a192f;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.search-filter-subtitle {
    font-size: 14px;
    color: #64748b;
    margin: 0;
}

.search-filter-form {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.filter-group label {
    font-size: 13px;
    font-weight: bold;
    color: #0f172a;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.search-box {
    flex: 2 1 280px;
    min-width: 220px;
}

.search-box input {
    width: 100%;
    padding: 11px 16px;
    font-size: 15px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    color: #0f172a;
    background-color: #ffffff;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box input:focus {
    outline: none;
    border-color: #0284c7;
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25);
}

.category-filter {
    flex: 1.5 1 240px;
    min-width: 200px;
}

.category-filter select {
    width: 100%;
    padding: 11px 16px;
    font-size: 15px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    color: #0f172a;
    background-color: #ffffff;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.category-filter select:focus {
    outline: none;
    border-color: #0284c7;
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25);
}

.filter-actions {
    flex: 0 0 auto;
}

.reset-button {
    padding: 11px 22px;
    font-size: 14px;
    font-weight: bold;
    border-radius: 6px;
    cursor: pointer;
    white-space: nowrap;
    height: 44px;
    border: none;
    line-height: 1;
}

.filter-status-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid #e2e8f0;
}

.aircraft-count {
    font-size: 14px;
    font-weight: 600;
    color: #0a192f;
    margin: 0;
}

.no-results-message {
    font-size: 15px;
    color: #b91c1c;
    font-weight: 600;
    margin: 0;
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    padding: 12px 18px;
    border-radius: 6px;
    width: 100%;
    text-align: center;
    margin-top: 12px;
}

/* ==========================================================================
   10. Aircraft Collection Category Sections & Tables
   ========================================================================== */
.aircraft-category-section {
    padding: 60px 20px;
    border-bottom: 1px solid #e2e8f0;
}

.aircraft-category-section.bg-alt {
    background-color: #f8fafc;
}

.category-group-header {
    text-align: center;
    margin-bottom: 35px;
}

.category-group-header h2 {
    font-size: 26px;
    color: #0f172a;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.category-group-header p {
    font-size: 15px;
    color: #64748b;
    max-width: 850px;
    margin: 0 auto;
}

/* Aircraft Information Table Section */
.table-section {
    background-color: #ffffff;
    padding: 65px 20px;
    border-bottom: 1px solid #e2e8f0;
}

.table-section h2 {
    font-size: 26px;
    color: #0f172a;
    text-align: center;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.table-section-desc {
    text-align: center;
    color: #64748b;
    font-size: 15px;
    margin-bottom: 30px;
}

.table-responsive {
    overflow-x: auto;
    margin: 0 auto;
    max-width: 1140px;
}

.aircraft-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 14px;
}

.aircraft-table th,
.aircraft-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.aircraft-table th {
    background-color: #0a192f;
    color: #ffffff;
    font-weight: bold;
    font-size: 14px;
    letter-spacing: 0.5px;
}

.aircraft-table tr:nth-child(even) {
    background-color: #f8fafc;
}

.aircraft-table tr:hover {
    background-color: #f1f5f9;
}

/* Aircraft Categories List Section (Unordered List) */
.category-list-showcase {
    background-color: #f8fafc;
    padding: 60px 20px 70px 20px;
    border-bottom: 1px solid #e2e8f0;
}

.category-list-showcase h2 {
    font-size: 26px;
    color: #0f172a;
    text-align: center;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.category-list-showcase p {
    text-align: center;
    color: #64748b;
    font-size: 15px;
    margin-bottom: 25px;
}

.simple-category-list {
    max-width: 650px;
    margin: 0 auto;
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 22px 34px 22px 54px;
}

.simple-category-list li {
    font-size: 15px;
    color: #1e293b;
    padding: 8px 0;
    border-bottom: 1px solid #e2e8f0;
    font-weight: bold;
}

.simple-category-list li:last-child {
    border-bottom: none;
}

/* ==========================================================================
   11. About Page Styles
   ========================================================================== */
.about-page-section {
    padding: 60px 20px;
    border-bottom: 1px solid #e2e8f0;
}

.about-page-section.bg-alt {
    background-color: #f8fafc;
}

.about-page-section h2 {
    font-size: 26px;
    color: #0f172a;
    text-align: center;
    margin-bottom: 18px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-page-intro {
    font-size: 16px;
    line-height: 1.8;
    color: #334155;
    text-align: center;
    max-width: 950px;
    margin: 0 auto 28px auto;
}

/* Objectives & Goals Lists */
.styled-list-container {
    max-width: 850px;
    margin: 0 auto;
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 26px 34px 26px 54px;
}

.styled-list-container li {
    font-size: 15px;
    color: #334155;
    padding: 10px 0;
    border-bottom: 1px solid #e2e8f0;
    line-height: 1.6;
}

.styled-list-container li:last-child {
    border-bottom: none;
}

/* Technologies Used Grid */
.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    max-width: 1140px;
    margin: 0 auto;
}

.tech-card {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 24px 20px;
    flex: 1 1 230px;
    max-width: 255px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.tech-card h3 {
    font-size: 18px;
    color: #0a192f;
    margin-bottom: 8px;
}

.status-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: bold;
    padding: 3px 10px;
    border-radius: 4px;
    margin-bottom: 14px;
}

.status-current {
    background-color: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.status-planned {
    background-color: #f1f5f9;
    color: #475569;
    border: 1px dashed #94a3b8;
}

.tech-card p {
    font-size: 14px;
    color: #475569;
    line-height: 1.6;
}

/* Website Structure Grid */
.structure-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    max-width: 1140px;
    margin: 0 auto;
    list-style: none;
    padding: 0;
}

.structure-card {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 20px;
    flex: 1 1 190px;
    max-width: 215px;
    text-align: center;
}

.structure-card h3 {
    font-size: 18px;
    color: #0a192f;
    margin-bottom: 8px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 6px;
}

.structure-card p {
    font-size: 13px;
    color: #475569;
    line-height: 1.5;
}

/* Aircraft Collection Summary Card */
.collection-summary-card {
    max-width: 850px;
    margin: 0 auto;
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 32px;
    text-align: center;
}

.collection-summary-card p {
    font-size: 15px;
    color: #334155;
    line-height: 1.7;
    margin-bottom: 20px;
}

.collection-category-list {
    display: inline-block;
    text-align: left;
    margin: 0 auto 25px auto;
    padding-left: 20px;
}

.collection-category-list li {
    font-size: 15px;
    color: #1e293b;
    padding: 5px 0;
    font-weight: bold;
}

/* Educational Notice Section */
.educational-notice-section {
    background-color: #ffffff;
    padding: 55px 20px;
    border-bottom: 1px solid #e2e8f0;
}

.notice-box {
    background-color: #f8fafc;
    border: 2px solid #0a192f;
    border-radius: 8px;
    padding: 32px 28px;
    max-width: 850px;
    margin: 0 auto;
    text-align: center;
}

.notice-box h2 {
    font-size: 22px;
    color: #0a192f;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.notice-box p {
    font-size: 15px;
    color: #334155;
    line-height: 1.7;
}

/* ==========================================================================
   12. Contact Page Styles
   ========================================================================== */
.contact-section {
    padding: 60px 20px 80px 20px;
    background-color: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    flex: 1;
}

.contact-intro {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 40px auto;
}

.contact-intro h2 {
    font-size: 26px;
    color: #0f172a;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.contact-intro p {
    font-size: 16px;
    color: #475569;
    line-height: 1.7;
}

.contact-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    max-width: 1150px;
    margin: 0 auto;
    justify-content: center;
    align-items: flex-start;
}

/* Left Column: Project Information */
.contact-info-card {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 30px;
    flex: 1 1 340px;
    max-width: 420px;
}

.contact-info-card h2 {
    font-size: 20px;
    color: #0a192f;
    margin-bottom: 18px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-info-card p {
    font-size: 14px;
    color: #475569;
    line-height: 1.6;
    margin-bottom: 15px;
}

.contact-info-card strong {
    color: #0f172a;
}

.contact-address {
    font-style: normal;
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 16px;
    margin-top: 20px;
}

.contact-address p {
    margin-bottom: 8px;
}

.contact-address p:last-child {
    margin-bottom: 0;
}

.contact-address a {
    color: #dc2626;
    text-decoration: none;
    font-weight: bold;
}

.contact-address a:hover {
    text-decoration: underline;
}

/* Right Column: Contact Form */
.contact-form-card {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 35px;
    flex: 1 1 480px;
    max-width: 660px;
}

.contact-form-card h2 {
    font-size: 20px;
    color: #0a192f;
    margin-bottom: 20px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: bold;
    color: #1e293b;
    margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    font-size: 14px;
    font-family: inherit;
    color: #1e293b;
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    box-sizing: border-box;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="password"]:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: 2px solid #0a192f;
    border-color: #0a192f;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    display: inline-block;
    width: 100%;
    background-color: #0a192f;
    color: #ffffff;
    font-size: 15px;
    font-weight: bold;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background-color 0.2s ease;
}

.btn-submit:hover {
    background-color: #dc2626;
}

/* ==========================================================================
   13. Sign Up Page Styles
   ========================================================================== */
.signup-section {
    padding: 60px 20px 80px 20px;
    background-color: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    flex: 1;
    display: flex;
    align-items: center;
}

.signup-container {
    max-width: 580px;
    width: 100%;
    margin: 0 auto;
}

.signup-card {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 35px 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.signup-card h2 {
    font-size: 20px;
    color: #0a192f;
    margin-bottom: 20px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
}

/* Informational message box */
.form-message {
    background-color: #f1f5f9;
    border-left: 4px solid #0a192f;
    padding: 12px 14px;
    border-radius: 4px;
    margin-bottom: 24px;
}

.form-message p {
    font-size: 13px;
    color: #475569;
    line-height: 1.5;
    margin: 0;
}

/* Checkbox group */
.form-checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 24px;
}

.form-checkbox-group input[type="checkbox"] {
    margin-top: 3px;
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: #0a192f;
}

.form-checkbox-group label {
    font-size: 14px;
    color: #334155;
    line-height: 1.4;
    cursor: pointer;
    font-weight: normal;
}

/* Sign In link under form */
.signin-link-box {
    text-align: center;
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid #e2e8f0;
}

.signin-link-box p {
    font-size: 14px;
    color: #475569;
    margin: 0;
}

.signin-link-box a {
    color: #dc2626;
    text-decoration: none;
    font-weight: bold;
    margin-left: 4px;
}

.signin-link-box a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   14. JavaScript Form & Notice Message Styles
   ========================================================================== */
.success-message {
    background-color: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
    padding: 14px 18px;
    border-radius: 6px;
    margin-bottom: 22px;
    font-size: 14px;
    line-height: 1.6;
    text-align: left;
}

.error-message {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
    padding: 14px 18px;
    border-radius: 6px;
    margin-bottom: 22px;
    font-size: 14px;
    line-height: 1.6;
    text-align: left;
}

/* ==========================================================================
   15. User Dashboard Styles
   ========================================================================== */
.user-profile-list {
    list-style: none;
    padding: 0;
    margin: 18px 0 24px 0;
    border-top: 1px solid #e2e8f0;
}

.user-profile-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #e2e8f0;
    font-size: 14px;
}

.user-profile-label {
    color: #64748b;
    font-weight: bold;
}

.user-profile-value {
    color: #0f172a;
    font-weight: 500;
}

.btn-signout {
    display: inline-block;
    width: 100%;
    background-color: #dc2626;
    color: #ffffff;
    font-size: 15px;
    font-weight: bold;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background-color 0.2s ease;
}

.btn-signout:hover {
    background-color: #b91c1c;
}

/* ==========================================================================
   15A. Profile Information & Edit Section Styles (dashboard.html)
   ========================================================================== */
.profile-info-section {
    margin-top: 20px;
}

.profile-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 12px;
    margin-bottom: 18px;
}

.profile-section-header h3 {
    font-size: 18px;
    color: #0a192f;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-edit-profile {
    background-color: #0a192f;
    color: #ffffff;
    font-size: 13px;
    font-weight: 600;
    padding: 8px 16px;
    border: 1px solid #0a192f;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-edit-profile:hover {
    background-color: #dc2626;
    border-color: #dc2626;
}

.btn-secondary {
    display: inline-block;
    width: 100%;
    background-color: #f1f5f9;
    color: #334155;
    font-size: 15px;
    font-weight: bold;
    padding: 12px 24px;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.2s ease;
    text-align: center;
}

.btn-secondary:hover {
    background-color: #e2e8f0;
    color: #0f172a;
    border-color: #94a3b8;
}

.profile-btn-group {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.profile-btn-group .btn-submit,
.profile-btn-group .btn-secondary {
    flex: 1 1 50%;
}

.form-input-readonly {
    background-color: #f8fafc;
    color: #64748b;
    border: 1px solid #e2e8f0;
    cursor: not-allowed;
}

.form-help-text {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: #64748b;
    line-height: 1.4;
}

.required-asterisk {
    color: #dc2626;
    font-weight: bold;
}

.profile-edit-instructions {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.5;
}

/* ==========================================================================
   16. Aircraft Details Page (.aircraft-details-section)
   ========================================================================== */
.aircraft-details-section {
    background-color: #ffffff;
    padding: 60px 20px;
    border-bottom: 1px solid #e2e8f0;
}

.aircraft-details-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: flex-start;
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.aircraft-details-image-col {
    flex: 1 1 450px;
    max-width: 540px;
    width: 100%;
}

.aircraft-details-figure {
    margin: 0;
    background-color: #0b1728;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #cbd5e1;
}

.aircraft-details-figure img {
    display: block;
    width: 100%;
    height: 380px;
    object-fit: cover;
    object-position: center;
}

.aircraft-details-figure figcaption {
    font-size: 13px;
    color: #475569;
    text-align: center;
    padding: 10px 14px;
    background-color: #f1f5f9;
    border-top: 1px solid #e2e8f0;
    font-style: italic;
}

.aircraft-details-info-col {
    flex: 1 1 480px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.aircraft-header-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid #e2e8f0;
}

.aircraft-header-row h1 {
    font-size: 28px;
    color: #0a192f;
    margin: 0;
}

.aircraft-actions-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 2px 0 6px 0;
}

.btn-save-aircraft {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: #0a192f;
    color: #ffffff;
    font-size: 14px;
    font-weight: bold;
    padding: 9px 18px;
    border: 2px solid #0a192f;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    align-self: flex-start;
}

.btn-save-aircraft:hover {
    background-color: #0284c7;
    border-color: #0284c7;
    color: #ffffff;
}

.btn-save-aircraft.is-saved {
    background-color: #fef08a;
    color: #854d0e;
    border-color: #ca8a04;
}

.btn-save-aircraft.is-saved:hover {
    background-color: #fee2e2;
    color: #991b1b;
    border-color: #ef4444;
}

.save-aircraft-message {
    font-size: 13px;
    padding: 8px 12px;
    border-radius: 4px;
    align-self: flex-start;
}

.save-aircraft-message.info-msg {
    background-color: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.save-aircraft-message.error-msg {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.save-aircraft-message.success-msg {
    background-color: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.save-aircraft-message a {
    color: inherit;
    font-weight: bold;
    text-decoration: underline;
}

.aircraft-detail-item {
    font-size: 16px;
    color: #334155;
    margin: 0;
    line-height: 1.5;
}

.aircraft-detail-item strong {
    color: #0f172a;
    font-weight: 600;
}

.aircraft-detail-desc-box {
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    border-left: 4px solid #38bdf8;
    border-radius: 6px;
    padding: 18px 20px;
    margin-top: 6px;
}

.aircraft-detail-desc-box h3 {
    font-size: 16px;
    color: #0a192f;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.aircraft-detail-desc-box p {
    font-size: 15px;
    color: #334155;
    line-height: 1.7;
    margin: 0;
}

.aircraft-specs-box {
    margin-top: 6px;
}

.aircraft-specs-box h3 {
    font-size: 16px;
    color: #0a192f;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    overflow: hidden;
    background-color: #ffffff;
}

.specs-table th {
    width: 35%;
    background-color: #0a192f;
    color: #ffffff;
    text-align: left;
    padding: 11px 16px;
    font-size: 14px;
    font-weight: 600;
    border-bottom: 1px solid #334155;
}

.specs-table td {
    width: 65%;
    background-color: #f8fafc;
    color: #1e293b;
    padding: 11px 16px;
    font-size: 14px;
    border-bottom: 1px solid #e2e8f0;
}

.specs-table tr:last-child th,
.specs-table tr:last-child td {
    border-bottom: none;
}

.aircraft-navigation-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 14px;
    padding-top: 16px;
    border-top: 1px solid #e2e8f0;
}

.aircraft-navigation-actions .btn-hero-secondary {
    border: 2px solid #0a192f;
    color: #0a192f;
    background-color: transparent;
    padding: 9px 20px;
    border-radius: 4px;
    font-weight: bold;
    text-decoration: none;
    font-size: 14px;
    display: inline-block;
    transition: all 0.2s ease;
}

.aircraft-navigation-actions .btn-hero-secondary:hover {
    background-color: #0a192f;
    color: #ffffff;
}

.error-notice-box {
    text-align: center;
    max-width: 650px;
    margin: 40px auto;
    padding: 40px 28px;
    background-color: #f8fafc;
    border: 2px dashed #94a3b8;
    border-radius: 8px;
}

.error-notice-box h2 {
    font-size: 24px;
    color: #0a192f;
    margin-bottom: 12px;
}

.error-notice-box p {
    font-size: 16px;
    color: #475569;
    margin-bottom: 20px;
    line-height: 1.6;
}

/* ==========================================================================
   16B. Saved Aircraft Section (dashboard.html)
   ========================================================================== */
.saved-aircraft-section {
    padding: 60px 20px 80px 20px;
    background-color: #f8fafc;
    border-top: 1px solid #e2e8f0;
}

.saved-aircraft-header {
    text-align: center;
    margin-bottom: 35px;
}

.saved-aircraft-header h2 {
    font-size: 26px;
    color: #0f172a;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.saved-aircraft-subtitle {
    font-size: 15px;
    color: #64748b;
    max-width: 750px;
    margin: 0 auto;
}

.saved-aircraft-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.saved-card-actions {
    display: flex;
    gap: 10px;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid #e2e8f0;
}

.saved-card-actions .btn-card {
    flex: 1;
    text-align: center;
    padding: 8px 12px;
    font-size: 13px;
}

.btn-remove-favorite {
    background-color: #ef4444;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: bold;
    padding: 8px 14px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    white-space: nowrap;
}

.btn-remove-favorite:hover {
    background-color: #dc2626;
}

.favorites-message-box {
    max-width: 650px;
    margin: 0 auto 24px auto;
    padding: 12px 18px;
    border-radius: 6px;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
}

.favorites-message-box.info-msg {
    background-color: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.favorites-message-box.error-msg {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.favorites-message-box.success-msg {
    background-color: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

/* Card Action Row (View Details + Favorite Toggle) */
.card-action-row {
    display: flex;
    gap: 8px;
    margin-top: auto;
    flex-wrap: wrap;
    align-items: center;
}

.card-action-row .btn-card {
    flex: 1 1 120px;
    text-align: center;
    margin: 0;
    padding: 9px 12px;
    font-size: 13px;
}

.btn-favorite-toggle {
    background-color: #f1f5f9;
    color: #0f172a;
    border: 1px solid #cbd5e1;
    font-size: 13px;
    font-weight: 600;
    padding: 9px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    flex: 1 1 140px;
    white-space: nowrap;
}

.btn-favorite-toggle:hover {
    background-color: #e2e8f0;
    border-color: #94a3b8;
}

.btn-favorite-toggle.is-favorited {
    background-color: #fee2e2;
    color: #b91c1c;
    border-color: #fca5a5;
}

.btn-favorite-toggle.is-favorited:hover {
    background-color: #fecaca;
    color: #991b1b;
}

/* Floating Toast Notification for Favorites */
.favorites-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: #0a192f;
    color: #ffffff;
    padding: 14px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    border: 1px solid #38bdf8;
    animation: toastSlideUp 0.3s ease-out;
}

@keyframes toastSlideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.favorites-toast.error-toast {
    border-color: #f87171;
}

.favorites-toast.success-toast {
    border-color: #4ade80;
}

.toast-close-btn {
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 18px;
    cursor: pointer;
    line-height: 1;
    padding: 0 4px;
}

.toast-close-btn:hover {
    color: #ffffff;
}

/* ==========================================================================
   17. Responsive Design (@media max-width: 768px)
   ========================================================================== */
@media (max-width: 768px) {
    .site-header h1 {
        font-size: 22px;
        letter-spacing: 1px;
    }

    .header-subtitle {
        font-size: 13px;
    }

    .section-container {
        padding: 0 10px;
    }

    .navbar-container {
        flex-direction: column;
        gap: 0;
        padding: 10px 0 0 0;
    }

    .site-logo img {
        width: 160px;
    }

    .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 0;
        width: 100%;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
    }

    .nav-links li a {
        padding: 12px 15px;
        border-bottom: 3px solid #111827;
    }

    .hero-section {
        padding: 50px 15px;
    }

    .hero-content h2 {
        font-size: 26px;
    }

    .hero-content p {
        font-size: 15px;
    }

    .about-section,
    .featured-section,
    .featured-aircraft,
    .categories-section,
    .cta-section,
    .aircraft-category-section,
    .table-section,
    .category-list-showcase,
    .about-page-section,
    .educational-notice-section,
    .contact-section,
    .signup-section {
        padding: 40px 15px;
    }

    .aircraft-card,
    .category-item,
    .tech-card,
    .structure-card,
    .contact-info-card,
    .contact-form-card,
    .signup-card {
        max-width: 100%;
        flex: 1 1 100%;
    }

    .contact-form-card,
    .signup-card {
        padding: 24px 18px;
    }

    .styled-list-container {
        padding: 20px 20px 20px 35px;
    }

    .aircraft-table th,
    .aircraft-table td {
        padding: 8px 10px;
        font-size: 13px;
    }

    .aircraft-details-section {
        padding: 30px 15px;
    }

    .aircraft-details-grid {
        flex-direction: column;
        padding: 20px 16px;
        gap: 24px;
    }

    .aircraft-details-image-col,
    .aircraft-details-info-col {
        max-width: 100%;
        flex: 1 1 100%;
    }

    .aircraft-details-figure img {
        height: 240px;
    }

    .aircraft-header-row h1 {
        font-size: 22px;
    }

    .specs-table th,
    .specs-table td {
        padding: 9px 12px;
        font-size: 13px;
    }

    .search-filter-section {
        padding: 24px 15px;
    }

    .search-filter-card {
        padding: 20px 16px;
    }

    .search-filter-form {
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
    }

    .search-box,
    .category-filter,
    .filter-actions {
        flex: 1 1 100%;
        min-width: 100%;
        width: 100%;
    }

    .reset-button {
        width: 100%;
        text-align: center;
    }

    .aircraft-navigation-actions {
        flex-direction: column;
    }

    .aircraft-navigation-actions .btn-card,
    .aircraft-navigation-actions .btn-hero-secondary {
        width: 100%;
        text-align: center;
    }

    .btn-save-aircraft {
        width: 100%;
        text-align: center;
    }

    .saved-aircraft-section {
        padding: 40px 15px;
    }

    .saved-card-actions {
        flex-direction: column;
    }

    .saved-card-actions .btn-card,
    .btn-remove-favorite {
        width: 100%;
        text-align: center;
    }

    .card-action-row {
        flex-direction: column;
        flex-wrap: nowrap;
        align-items: stretch;
    }

    .card-action-row .btn-card,
    .btn-favorite-toggle {
        width: 100%;
        flex: none;
        text-align: center;
        box-sizing: border-box;
    }

    .favorites-toast {
        left: 15px;
        right: 15px;
        bottom: 15px;
        max-width: calc(100vw - 30px);
        box-sizing: border-box;
    }

    .profile-btn-group {
        flex-direction: column;
        gap: 10px;
    }

    .profile-btn-group .btn-submit,
    .profile-btn-group .btn-secondary {
        width: 100%;
        flex: none;
    }

    .profile-section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .profile-section-header .btn-edit-profile {
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    .footer-nav {
        flex-direction: column;
        gap: 10px;
    }
}